egg

egg

3. a female reproductive cell at any stage before fertilization; after fertilization and fusion of the pronuclei it is called a zygote.

egg

(eg),

The female sexual cell, or gamete; after fertilization and fusion of the pronuclei it is a zygote; in humans the term egg is not used. In reptiles and birds, the egg is provided with a protective shell, membranes, albumin, and yolk for the nourishment of the embryo.See also: oocyte, ovum.

[A.S. aeg]

egg

egg

(ĕg)

n.

a. A female gamete; an ovum. Also called egg cell.

b. The round or oval female reproductive body of various animals, including birds, reptiles, amphibians, fishes, and insects, consisting usually of an embryo surrounded by nutrient material and a protective covering.

c. The oval, thin-shelled reproductive body of a bird, especially that of a hen, used as food.

egg′less adj.

egg′y adj.

egg

[eg]

Etymology: ONorse

a female reproductive cell at any stage before fertilization. After fertilization and fusion of the pronuclei, it is called a zygote. Also called ovum.

egg

A popular term for a genetically haploid female sex cell.

egg

Parasitology A fertilized gamete which may give rise to an adult. See Chicken footprint egg Reproduction medicine A female reproductive cell, also called an oocyte or ovum.

egg

(eg)

The female sexual cell or gamete. (This term is not used in relation to humans.) See also: oocyte

[A.S. aeg]

egg

The OVUM or female reproductive cell (GAMETE). The egg contains half the chromosomes required by the new individual, and the other half are supplied by the sperm at the moment of fertilization. The egg is a very large cell, about one tenth of a millimetre in diameter, and much larger than a sperm. This is because it contains nutritive material (yolk) to supply the embryo in its earliest stages before it can establish a supply from the mother via the placenta. If more than one egg is produced and fertilized, a multiple pregnancy results, but the offspring are not identical since half the chromosomes in each come from different sperms, with different genetic material. If a fertilized ovum divides, and each of the two halves forms a new individual, these will be identical twins, with identical chromosomes.

egg

a structure produced by insects, birds and reptiles whose function is to enable embryonic development outside the female on land without the use of water as a growth medium. The vertebrate egg consists of an outer shell (hard in birds, leathery in reptiles), four types of embryonic membranes, a food supply in the yolk sac and surrounding albumen (‘egg white’) and the embryo which develops from an OVUM fertilized before the shell is deposited. Domestic birds can produce unfertilized eggs in which the embryo does not develop.

egg

female sexual cell/ovum/oocyte/gamete, which after fertilization by, and fusion with, a sperm forms a zygote

egg

1. an ovum; a female gamete.

2. an oocyte.

3. a female reproductive cell at any stage before fertilization and its derivatives after fertilization and even after some development.

4. hen egg, consisting of a blastodisk, remnant of the nucleus in a mass of white yolk sitting on top of the yellow yolk, the yolk suspended by two twisted strands of mucin-like protein, the chalazae, from the two poles of the egg, two yolk membranes that separate the yolk from the albumen, the albumen or white of the egg, which is in four separate layers of liquid and jelly material, two thin shell membranes and an eggshell. See also avian oogenesis.

5. helminth egg.

egg bound

a disease of cage birds, birds in zoological collections and in fish. In birds the hen may show pain and be straining and the egg may be palpable. The syndrome is comparable with dystocia in a viviparous animal. In fish the only sign is the wrinkled, shriveled eggs.

egg count

counting of helminth eggs as an estimate of the parasite status in the animal or group. Flotation techniques and special counting chambers are used. The results are expressed as eggs per gram (e.p.g) of feces.

egg dipping

dipping of hatchery eggs in antibiotic solutions, especially erythromycin or tylosin, to prevent the transmission of infections from adults to chickens.

egg drop syndrome

first observed in 1976 the disease is caused by an adenovirus and characterized by the hens laying a reduced number of thin-shelled or shell-less eggs. Subsequently the egg yield is reduced.

egg eating

a vice which begins without apparent reason. A high rate of egg breaking in the unit encourages birds to begin. Many techniques are used in prevention but frequent egg removal is essential.

grader egg

a reject from those destined for household use; used in petfood manufacture.

egg heating

heating eggs in a hot-air incubator for 12-14 hours to reduce the transmission of infection on the egg exterior.

secreted around the egg mass and membranes during its last 15 hours in the uterus; composed of calcium carbonate and a glycoprotein matrix; surrounded by the cuticle.

thin-shelled egg

occurs in egg drop syndrome (see above), DDT poisoning. The shell of the egg is very thin, often missing altogether.

egg tooth

the additional tip to the beak in birds that is used by the hatching chick to peck out the circular hatch of shell to allow it to emerge. The egg tooth drops off in a few days. Called also bean.

egg transmission

transmission of disease from hen to chicken and between chickens via infection in the egg, e.g. Mycoplasma gallisepticum, M. meleagridis.

egg white injury

the effects of biotin deficiency induced by feeding of raw egg whites (albumen). The factor responsible is avidin which binds biotin, preventing absorption.

egg yield

in domestic fowl the normal annual average over a large, national population is about 130 eggs per bird; good units average 200.

Patient discussion about egg

Q. Is there any difference between brown eggs and white eggs? My fitness instructor suggested me to have brown eggs instead of white eggs so is there any difference between brown eggs and white eggs?

A. I have to agree with you. Never heard of any difference between the two and it doesnt sound reasonable that one is better to your health than the other...

Q. why the renal doctor told my husband that he needs to eat a dozen of egg a week for protein,how it will help? it won`t afect his cholesterol,also i would like to know what role the protein plays on his treatment and what other foot its rich in protein that he can can take,without causing problems to his health.

A. if i understand correctly, your husband is diabetic. like my grandfather he probably developed a "Diabetic nephropathy" which is a long name to: kidney being destroyed because of blood vessels clotted by diabetes. because of that destruction the kidneys allow protein to go out in the urine. this is a dangerous situation,a protein in the name of "albomin" helps our blood to hold fluids in blood vessels. without it fluid will leave the blood and go to our organs. not a good situation. so he needs a lot of proteins. here is a list of a 100 protein rich foods:http://smarterfitter.com/blog/2007/10/28/100-most-protein-rich-vegetarian-foods/

Q. How can I catch Salmonella? Yesterday I ate a mousse which was made from raw eggs. Could I have caught Salmonella?

A. Salmonella infections usually resolve in 5-7 days and often do not require treatment unless the patient becomes severely dehydrated or the infection spreads from the intestines. Persons with severe diarrhea may require rehydration, often with intravenous fluids (IV). Antibiotics are not usually necessary unless the infection spreads from the intestines.

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